3. SIGMA SM 50

SIGMA SM 50

1 review

80 Watt

SIGMA SM 50

1 review

Technical Highlights

  • Power 120/80 watts, impedance 4 ohms, frequency response over 20000 Hz.
  • Neodymium magnet, 19 mm voice coil, black anodized aluminum membrane.
  • Power handling at 300 Hz, flow-optimized polymer basket design.
  • More technical details
€315.61
-7% €339.00 €315.61
2% discount with credit card

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ProductSIGMA SM 50 · Black

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execution: Black
Estimated delivery: Sep 21–Sep 24.
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datasheet
Gladen-SIGMA SM 50-2" (5cm) Mitteltöner-masori-kaufen
€315.61
€339.00-7% €315.61

The SIGMA SM 50 from Gladen is a 2-inch midrange speaker with a nominal size of 50 mm. The technical construction includes a black anodized aluminum diaphragm and a flow-optimized polymer basket. For sound generation, a neodymium magnet and a 19 mm voice coil on a fiberglass carrier are used. The model has an impedance of 4 Ohms and is equipped with a rubber surround and a Conex centering spider. The frequency response of the speaker extends beyond 20,000 Hz. The delivery includes a mounting frame with a click closure as well as hexagon and OEM grilles.

Features
  • 2 inch (5 cm) midrange speaker
  • Black anodized aluminum diaphragm
  • Flow-optimized polymer basket
  • Power handling: 120 Watts
  • Power handling: 80 Watts (300 Hz | 24 dB/Oct.)
  • Impedance: 4 Ohms
  • Neodymium magnet
  • 19 mm voice coil
  • Aluminum Dust Cap
  • Mounting frame with click closure
  • Hexagon grille and OEM grille
  • Diameter (outer) mounting ring: 65 mm
  • Hole diameter: 51 mm
  • Installation height with grille: 7.5 mm
Technical Data
  • Resonance frequency (Fs): 135 Hz
  • DC resistance (Re): 3.2 Ohms
  • Mechanical quality (Qms): 7.60
  • Electrical quality (Qes): 0.58
  • Total quality (Qts): 0.54
  • Equivalent volume (Vas): 0.3 liters
  • Effective diaphragm area (Sq): 15.6 cm²
  • Moving mass (Mms): 1.6 g

Frequently Asked Questions about SIGMA SM 50

What technical features define the SIGMA SM 50 midrange driver?

The SIGMA SM 50 from Gladen is a 2-inch (5 cm) midrange driver with an anodized aluminum membrane and a flow-optimized polymer basket for excellent sound performance. An integrated neodymium magnet and a 19-mm voice coil ensure outstanding sound transmission and stability. The black anodized aluminum surface and the fiberglass voice coil former are notable features. It offers a power handling of 120/80 watts at 300 Hz and a frequency response of over 20,000 Hz.

How does the anodized aluminum membrane of the SIGMA SM 50 affect the sound?

The anodized aluminum membrane of the SIGMA SM 50 provides acoustic precision and enhanced sound stability. Aluminum is known for its lightweight and robust structure, ensuring distortion-free reproduction at high frequencies. The anodization also improves surface hardness, making the midrange driver particularly durable and resistant to environmental influences. Together with the neodymium magnet and the rubber surround, the membrane contributes to a dynamic and clear sound profile.

What frequencies can the SIGMA SM 50 cover?

The SIGMA SM 50 midrange driver covers an impressive frequency range of over 20,000 Hz. This allows for detailed sound reproduction in the mid and high frequency spectrum, ideal for demanding audio applications. With its wide frequency response, the speaker can adequately reproduce a variety of music genres and prevents sound details from being lost. The Conex centering spider and the fiberglass voice coil former contribute to the excellent sound precision required in this frequency range.

What role does the neodymium magnet play in the SIGMA SM 50?

The neodymium magnet in the SIGMA SM 50 provides high magnetic force and enables a compact design. Neodymium is one of the strongest magnetic materials, allowing for effective interaction with the voice coil without increasing the size of the midrange driver. This promotes precise control of the aluminum diaphragm and improves the efficiency of sound conversion. Together with the rubber surround and the sophisticated basket design, the neodymium magnet ensures clear and powerful audio playback.

How is the load capacity of the SIGMA SM 50 designed and what does that mean exactly?

The SIGMA SM 50 offers a load capacity of 120 watts (peak) or 80 watts RMS, making it ideal for dynamic audio applications. These values ensure that the midrange driver can operate distortion-free even at high volumes. The technical construction, including stable terminal connections and a robust voice coil, helps manage electrical and thermal loads. This particularly means for audiophiles the ability to enjoy sound at high volume and quality without compromising the hardware.

Why is the flow-optimized design of the polymer basket important?

The flow-optimized design of the polymer basket in the SIGMA SM 50 improves air circulation behind the diaphragm. This minimizes resonances and turbulence that could affect the sound. The optimized airflow contributes to clean sound reproduction by isolating and eliminating unwanted background noise. Together with the voice coil-optimized architecture, this feature enhances the overall sound clarity and efficiency of the speaker, which is valuable for demanding audio tuning.

What installation options does the SIGMA SM 50 accessory offer?

The accessory of the SIGMA SM 50 allows for flexible installation options through the included mounting frame with a click closure. This frame facilitates mounting in various environments and ensures a stable attachment, while different grille options, including hexagon and OEM grille, allow for aesthetic customization of the speaker. Integration is straightforward with a hole diameter of 51 mm and an outer diameter of 65 mm at a total height of 7.5 mm, ensuring smooth compatibility with standard installation openings.

What role does the Conex centering spider play in the SIGMA SM 50?

The Conex centering spider in the SIGMA SM 50 stabilizes the movements of the voice coil to provide precise sound reproduction. It protects the diaphragm from unwanted vibrations and ensures that the drive remains exactly linear. The Conex fabric structure used is particularly durable and heat-resistant. In combination with the rubber surround and the fiberglass voice coil carrier, the centering spider optimizes sound quality as well as the reliability of the speaker during intense usage scenarios.

What impedance does the SIGMA SM 50 have and what are the advantages?

The SIGMA SM 50 midrange driver has an impedance of 4 ohms, making it compatible with many audio amplifiers and head units. A lower impedance typically means that less voltage is required for the same power, which can increase efficiency. This is particularly advantageous when you want to achieve a powerful and clear sound with relatively little energy input. The technical design, especially the stable voice coil and rubber suspension, helps the midrange driver effectively manage the impedance.

What significance does the frequency response up to over 20,000 Hz have in the SIGMA SM 50?

A frequency response up to over 20,000 Hz means that the SIGMA SM 50 can also reproduce very high tones accurately, ensuring detailed and nuanced sound reproduction. The extended frequency range ensures that musical content can be reproduced in full bandwidth without losing significant information in the high-frequency range. This feature is particularly important for genres like classical or jazz, where the fine details of the instrumentation should remain audible. Combined with the aluminum diaphragm and the neodymium magnet, this results in high audiophile capability.

Manufacturer information/responsible person

Gladen Europe GmbH
Alexandra Gladen

Postal address:
Bertha-Benz-Str. 97
2141 Walddorfhäslach
Germany

Contact: info@gladen.com

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